What book pissed you off the most?

What book have you read that made your blood boil?
It was probably an assigned reading for school or something a friend or family member gave you to read.

For me it's Purpose Driven Life by Rick Warren. Misinterpreted, out of context snippets from an ancient fairy tale, used to justify backward simple mindedness and bigotry. I can't believe millions of people read that piece of crap. And I was pretty offended when I was given it to read by a family friend.

Regardless.

Catcher in the Rye. Protagonist isn't likeable he is stupid, annoying, depressed, and unwilling to get help. Also J.D. Salinger is the most obnoxious pansy in the world.